Editorial for VPEX P0 - Pizza
                Remember to use this editorial only when stuck, and not to copy-paste code from it. Please be respectful to the problem author and editorialist.
Submitting an official solution before solving the problem yourself is a bannable offence.
        Submitting an official solution before solving the problem yourself is a bannable offence.
We are dividing  slices among 
 friends. Each friend gets 
 slices, rounded down. There are 
 slices left over.
Time Complexity: 
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